1. Hurricane Betsy Strikes Louisiana (1965): On September 5, 1965, Hurricane Betsy made landfall in Louisiana causing widespread damage, flooding, and claiming over 75 lives. It remains one of the costliest hurricanes to hit the U.S. and led to significant improvements in disaster response and preparedness.

2. First Louisiana Governor Elected Under New Constitution (1979): On September 5, 1979, David C. Treen was elected as the first Louisiana governor under the state's new constitution that was adopted in 1974. Treen served as governor until 1984.

3. Cajun Musician Floyd LeBlanc's Birthday (1928): Floyd LeBlanc, a well-known Cajun accordionist and songwriter, was born on September 5, 1928, in Louisiana. He recorded several albums and performed at festivals and dance halls throughout the state.

4. Governor Earl Long Discharged from Psychiatric Hospital (1959): On September 5, 1959, Louisiana Governor Earl Long was discharged from a psychiatric hospital in Galveston, Texas, where he was receiving treatment for a nervous breakdown. He returned to Louisiana but was soon committed again, sparking a controversy over his mental fitness to hold office.

5. Dr. John Records Critically Acclaimed Album (1972): On September 5, 1972, Grammy-winning musician Dr. John released his critically acclaimed album, "Dr. John's Gumbo," which featured covers of classic New Orleans R&B songs. The album is considered a classic of the genre and helped to revive interest in the rich musical heritage of Louisiana.